[A83] Re: ex af,af'

To: assembly-83@lists.ticalc.org
Subject: [A83] Re: ex af,af'
From: David Phillips <david@acz.org>
Date: Sun, 30 Dec 2001 05:45:58 -0600
References: <200112291627.QAA18691@chup-a-chup.scarlet.nl> <000701c190ea$441728c0$041a450a@campus.mdh.se>
Reply-To: assembly-83@lists.ticalc.org


Either your function is being called recursively, or interrupts are not
disabled.

Another possibility is that on key interrupts might occur even if interrupts
are disabled.

> excluding the fact that the value in af' gets lost? As interrupts are =
> disabled, I figured that the latter could work just like the first one, =
> but I was mistaken. If I use the ex af,af' method of preserving a, the =
> rle decoding routine that it is part of decodes the image erroneously =
> SOMETIMES. The decoder's function gets unreliable. How can this be?

References:

[A83] Ti83+ SDK PDF

From: "Henk Poley" <HPoley@DDS.nl>

[A83] ex af,af'

From: =?iso-8859-1?Q?Jens_Bj=F6rnhager?= <jensbj@home.se>

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